PAGE 
CONTENTS. 
Bower, F. O.— Notes on the Morphology of Ophioglossum (Cheiroglossa) 
palmatum, L. With Plates X'XII-XXIV 
WOODBURN, W. L. — Spermatogenesis in certain Hepaticae. With 
Plate XXV 299 
Bailey, I. W.— A Cretaceous Pityoxylon with Marginal Tracheides. 
With Plate XXVI 
Osborn, T. G. B.- Spongospora subterranea, (Wallroth) Johnson. With 
Plate XXVII 
Essed, E. — The Panama Disease. I. With Plate XXVIII 
Essed, E. — The Panama Disease. II. With Plate XXIX 
Essed, E.— The Surinam Disease. A Condition of Elephantiasis of the 
Banana caused by Ustilaginoidella oedipigera. With Plate XXX 
Essed, E. — Rice Disease caused by Ustilaginoidella graminicola. With 
Plate XXXI 
SPRATT, E. R.— Some Observations on the Life-history of Anabaena 
Cycadeae. With Plate XXXII 
MAslen, A. J. — The Structure of Mesoxylon Sutcliffii (Scott), With 
Plates XXXIII-XXXVI 
WILSON, M.— Spermatogenesis in the Bryophyta. With Plates XXXVII 
and XXXVIII and three Figures in the Text 
SCOTT, R.— On Traquairia. With Plates XXXIX and XL and four 
Figures in the Text .......... 
Yasui, K.— On the Life-history of Salvinia natans. With Plates XLI- 
XLIII and one Figure in the Text 
Delf, E. M. — Transpiration and Behaviour of Stomata in Halophytes. 
With thirteen Figures in the Text 
Armstrong, H. E. and E. F. — The Function of Hormones in regulating 
Metabolism 
2 77 
315 
327 
343 
353 
363 
367 
369 
381 
415 
459 
469 
485 
NOTE. 
KUSANO, S.— Preliminary Note on Gastrodia elata and its Mycorhiza 
507 
521 
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